Staff Operations Engineer in Toronto

Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Our work focuses on diverse areas including AI, social media, security, and more. The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. Along with thousands of volunteer contributors and collaborators worldwide, Mozillians design, build, and distribute open-source software that enables people to enjoy the internet on their terms.

A Staff Operations Engineer leads the design, reliability, and evolution of hybrid-cloud and workplace infrastructure. This senior role spans teams, drives complex initiatives, sets technical direction, and ensures systems are scalable, secure, and efficient. This role combines technical execution with leadership, shaping architecture both directly and collaboratively.

What You’ll Do

• Domain Architecture & Technical Direction
  • Own and evolve architecture within a defined infrastructure domain
  • Design and implement scalable, reliable systems spanning multiple teams or environments
  • Establish and promote best practices, patterns, and standards within the domain
  • Contribute to medium- and long-term technical strategy (typically 6-18 months)
• Complex Problem Solving & Execution
  • Lead delivery of ambiguous, high-impact infrastructure projects
  • Break down elaborate system problems into implementable solutions
  • Drive migrations, re-architectures, and performance/reliability improvements
  • Remain hands-on with critical systems and implementations
• Cross-Team Collaboration
  • Work across teams (IT, SRE, Security, Service Owners) to unify solutions
  • Influence technical decisions through design reviews and collaboration
  • Ensure systems integrate cleanly across infrastructures (office, DC, cloud)
• Reliability, Operations & Scaling
  • Improve system reliability through monitoring, alerting, and operational design
  • Contribute to defining SLIs/SLOs and capacity planning within the domain
  • Participate in and lead root cause analysis for complex incidents
  • Decrease operational toil through automation and system improvements
• Infrastructure & Networking Depth
  • Design and support core infrastructure components (compute, DNS, networking, identity, etc.)
  • Drive improvements in performance, scalability, and dependability
  • Contribute deep expertise in at least one area (e.g., DNS, network architecture, cloud infra)
• Automation & Tooling
  • Build and improve automation using scripting and Infrastructure as Code
  • Contribute to internal tooling and platform improvements
  • Promote repeatable, standardized approaches to system management
• Mentorship & Technical Guidance
  • Mentor engineers and guide system design and troubleshooting
  • Raise the technical quality of the team through reviews and shared practices
  • Act as a go-to resource within the domain
• Documentation & Operational Clarity
  • Maintain clear documentation, diagrams, and runbooks for systems owned
  • Ensure systems are understandable and operable by others
  • Contribute to knowledge sharing across teams

What you’ll bring:

• 6+ years of experience in systems engineering or infrastructure roles
• Strong experience designing and operating production infrastructure
• Solid expertise in:
• VMware
• Cisco UCS
• Application/Network Load balancers
• Linux/Unix Operating Systems
• Networking fundamentals (DNS, TCP/IP, routing, firewalls)
• Data center environments
• Demonstrated ability to lead complex technical work across teams

Preferred Skills

• Experience with Infrastructure as Code (Puppet/Ansible/etc)
• Python
• Familiarity with observability tooling and reliability practices
• Experience with containerization and modern platform tooling
• Exposure to security best practices in infrastructure design

Key Competencies

• Multi-Team Impact: Demonstrate influence and contributions that extend beyond your immediate team.
• Technical Ownership (Scoped): Take responsibility for systems or architecture within a clearly defined area of the infrastructure.
• Execution Amid Ambiguity: Delivers on loosely defined problems with high impact.
• Influence Without Authority: Drives alignment through credibility and alliance.
• Balance of Depth + Breadth: Deep in one area, competent across adjacent systems.
• Hands-On Leadership: Actively contributes to implementation, not just design.

Bonus Skills/Competencies

• GitHub Enterprise Administration
• User Access Management
• GH Org / Repo Management
• SSO / SCIM Integration
• Policy Enforcement

What you’ll get:

• Generous performance-based bonus plans for all eligible employees
• Rich medical, dental, and vision coverage
• Generous retirement contributions with 100% immediate vesting
• Quarterly all-company wellness days
• Country-specific holidays plus a day off for your birthday
• One-time home office stipend
• Annual professional development budget
• Quarterly well-being stipend
• Considerable paid parental leave
• Employee referral bonus program
• Other benefits (life/AD&D, disability, EAP, etc. - varies by country)

About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere.

Commitment to diversity, equity, inclusion, and belonging

Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities.